Britain's Railways have always been built on technology. From Victorian times to today, locomotive design has come a long way. Some engines stand out from the rest. Ancient or modern, large or small, they are the great trains, classic designs which define an era and capture the imagination.

Footage includes: The Prince on the Ffestiniog Railway, The 5700 class of the GWR on the Yorkshire Pennines, The stanier black 5s in the forth of faith, The Bluebell line and Richard Maunsell's Locomotives and British Rail Class 37s cross the wild landscape of the Northern Highlands.